Submission #154949

---

Source Code Expand

#include <algorithm>
#include <bitset>
#include <cctype>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
using namespace std;

int as[1000001];

int main() {
    int n;
    cin >> n;

    as[1] = as[2] = 0;
    as[3] = 1;
    for (int i = 4; i <= n; i++) {
        as[i] = (as[i - 1] + as[i - 2] + as[i - 3]) % 10007;
    }
    cout << as[n] << endl;
}

Submission Info

Judge Result